ES424119A1 - Method of comminuting of materials at low temperatures - Google Patents

Method of comminuting of materials at low temperatures

Info

Publication number
ES424119A1
ES424119A1 ES424119A ES424119A ES424119A1 ES 424119 A1 ES424119 A1 ES 424119A1 ES 424119 A ES424119 A ES 424119A ES 424119 A ES424119 A ES 424119A ES 424119 A1 ES424119 A1 ES 424119A1
Authority
ES
Spain
Prior art keywords
materials
low temperatures
comminuting
brittle
gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES424119A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of ES424119A1 publication Critical patent/ES424119A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/18—Use of auxiliary physical effects, e.g. ultrasonics, irradiation, for disintegrating
    • B02C19/186—Use of cold or heat for disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/04—Disintegrating plastics, e.g. by milling
    • B29B17/0404—Disintegrating plastics, e.g. by milling to powder
    • B29B17/0408—Disintegrating plastics, e.g. by milling to powder using cryogenic systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/37—Cryogenic cooling

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Disintegrating Or Milling (AREA)
  • Crushing And Grinding (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Materials which became frangible at low temperatures e.g. synthetic-resin foil scraps, are comminuted by entraining the materials in a carrier gas and treating them with a low-temperature gas, e.g. nitrogen, to render them brittle. The brittle materials are then subjected to milling. The materials are entrained through the mill in the carrier gas while a subatmospheric pressure is maintained for both gas streams in the system.
ES424119A 1973-03-09 1974-03-09 Method of comminuting of materials at low temperatures Expired ES424119A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2311933A DE2311933C3 (en) 1973-03-09 1973-03-09 Process and device for the comminution of substances at low temperatures

Publications (1)

Publication Number Publication Date
ES424119A1 true ES424119A1 (en) 1976-06-16

Family

ID=5874369

Family Applications (1)

Application Number Title Priority Date Filing Date
ES424119A Expired ES424119A1 (en) 1973-03-09 1974-03-09 Method of comminuting of materials at low temperatures

Country Status (11)

Country Link
US (1) US3921917A (en)
AT (1) AT327658B (en)
BE (1) BE812095A (en)
BR (1) BR7401798D0 (en)
CH (1) CH570202A5 (en)
DE (1) DE2311933C3 (en)
ES (1) ES424119A1 (en)
FR (1) FR2220309B3 (en)
NL (1) NL7316936A (en)
NO (1) NO740817L (en)
ZA (1) ZA741563B (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102503A (en) * 1975-04-16 1978-07-25 Linde Aktiengesellschaft Method of and apparatus for the low-temperature milling of materials
US3985086A (en) * 1975-06-09 1976-10-12 The Raymond Lee Organization, Inc. Freezer, vacuum, oven sewage treatment system
FR2352589A1 (en) * 1976-05-28 1977-12-23 Air Liquide PROCESS FOR FRAGILIZING THE TEGUMENTS OF SMALL-SIZED SEEDS
GB1558320A (en) * 1978-05-30 1979-12-19 Hastie A M B Bitumen recovery
US4222527A (en) * 1979-02-22 1980-09-16 Union Carbide Corporation Cryopulverizing packed bed control system
US4511091A (en) * 1983-01-06 1985-04-16 Augusto Vasco Method and apparatus for recycling thermoplastic scrap
US4645131A (en) * 1984-12-24 1987-02-24 Hailey Robert W Powder milling method to produce fine powder sizes
US4692982A (en) * 1986-05-22 1987-09-15 Rice Norman B Lining removal process
US4846408A (en) * 1988-01-21 1989-07-11 Gentex Corporation Method for making a friction material
JP2725505B2 (en) * 1991-12-02 1998-03-11 株式会社日立製作所 Waste treatment method and apparatus
US5533680A (en) * 1994-12-28 1996-07-09 U.S. Rubber Reclaiming, Inc. Process to grind thermoset or thermoplastic materials
US5597123A (en) * 1995-06-30 1997-01-28 Praxair Technology, Inc. Ultra-high energy cryogenic impact system
DE19533078A1 (en) * 1995-09-07 1997-03-13 Messer Griesheim Gmbh Method and device for grinding and classifying regrind
US6076752A (en) * 1998-06-01 2000-06-20 Quality Botanical Ingredients, Inc. Method and apparatus for inert gas purging/temperature control for pulverizing/grinding system
KR100351868B1 (en) * 2001-11-15 2002-09-13 Kolon Construction Co Ltd Method for freezing pulverizing waste materials using freezing gas
DE102014112154A1 (en) * 2014-08-26 2016-03-03 Netzsch Trockenmahltechnik Gmbh METHOD FOR CLASSIFYING SOLID PRODUCT FRACTIONS, SEPARATING DEVICE AND CLEANING PLANT
US10675634B2 (en) * 2015-08-13 2020-06-09 Lehigh Technologies, Inc. Systems, methods, and apparatuses for manufacturing micronized powder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2609150A (en) * 1949-11-05 1952-09-02 Union Carbide & Carbon Corp Mechanical pulverization of refrigerated plastics
DE1291502B (en) * 1965-07-20 1969-03-27
DE1778559C3 (en) * 1968-05-10 1973-10-31 Linde Ag, 6200 Wiesbaden Device for shredding substances at low temperatures
CH491675A (en) * 1969-12-01 1970-06-15 Inventa Ag METHOD OF GRINDING GRAINY MATERIALS AT LOW TEMPERATURES

Also Published As

Publication number Publication date
ATA166574A (en) 1975-04-15
CH570202A5 (en) 1975-12-15
NO135969C (en) 1977-07-06
DE2311933A1 (en) 1974-09-19
NO740817L (en) 1974-09-10
ZA741563B (en) 1975-02-26
NO135969B (en) 1977-03-28
NL7316936A (en) 1974-09-11
US3921917A (en) 1975-11-25
BR7401798D0 (en) 1974-11-19
DE2311933C3 (en) 1979-12-20
FR2220309B3 (en) 1977-07-15
AT327658B (en) 1976-02-10
BE812095A (en) 1974-07-01
DE2311933B2 (en) 1979-04-26
FR2220309A1 (en) 1974-10-04

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